Ralph Jentsch has confirmed the authenticity of this drawing. Its correct title is Wintertags. Strassenszene Berlin and it was drawn in 1925.
Please note that the work is signed 'Grosz' (lower right); with the Nachlass stamp no. 3-85-4 (on the reverse).
Please note the first line of provenance should read:
Estate of the artist.
G. Grosz, Ade, Witboi, Berlin, 1955, p. 36 (illustrated; titled Wintertags).